time-sharing service,packet net-work是什么意思

用法例句

Then,an empty-car service time-space network is created, and a multi-stage optimization model of empty car distribution un.

基于空车服务时空网络的构建,采用动态规划方法提出了铁路局(公司)管内空车调配的多阶段策略优化模型。

The method of building network time server and the process of designing time calibration software in network are discussed.

论述了网络时间服务器的构建方法和网络授时软件的设计流程。

Performance of assurance services in differentiated services networks based on simulation;

差分服务网络中基于仿真的确保服务质量研究